yarn add autoprefixer@7.1.2 babel-core@6.22.1 babel-helper-vue-jsx-merge-props@2.0.3 babel-loader@7.1.1 babel-plugin-syntax-jsx@6.18.0 babel-plugin-transform-runtime@6.22.0 babel-plugin-transform-vue-jsx@3.5.0 babel-preset-env@1.3.2 babel-preset-stage-2@6.22.0 chalk@2.0.1 copy-webpack-plugin@4.0.1 css-loader@0.28.0 extract-text-webpack-plugin@3.0.0 file-loader@1.1.4 friendly-errors-webpack-plugin@1.7.0 html-webpack-plugin@2.30.1 node-notifier@5.4.3 optimize-css-assets-webpack-plugin@3.2.0 ora@1.2.0 portfinder@1.0.13 postcss-import@11.0.0 postcss-loader@2.0.8 postcss-url@7.2.1 rimraf@2.6.0 semver@5.3.0 shelljs@0.7.6 uglifyjs-webpack-plugin@1.1.1 url-loader@2.3.0 vue-loader@13.3.0 vue-style-loader@3.0.1 vue-template-compiler@2.6.14 webpack@3.12.0 webpack-bundle-analyzer@3.9.0 webpack-cli@3.3.12 webpack-dev-server@2.9.1 webpack-merge@4.2.2 sass-loader@7.3.1 tunnel@0.0.6 vue-cli